+1 IMOG:
We had 5 of the same CPUs during the MPOWER OC Academy.
The worst did 4800MHz totaly maxed out on a CORSAIR H80I (decent IMC with 2650MHz 6-11-6 )
Two around 5000MHz 1.45, one 5000 1.5.
The best 5000MHz 32M Pi at 1.28, which we put under LN2. The latter CPU did close to 6700 1M and 3D around 6500ish...